1231278074 has 16 divisors (see below), whose sum is σ = 2105987688. Its totient is φ = 534853632.

The previous prime is 1231278043. The next prime is 1231278089. The reversal of 1231278074 is 4708721321.

It can be written as a sum of positive squares in 4 ways, for example, as 1033172449 + 198105625 = 32143^2 + 14075^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1392407 + ... + 1393290.

Almost surely, 2^1231278074 is an apocalyptic number.

1231278074 is a deficient number, since it is larger than the sum of its proper divisors (874709614).

1231278074 is a wasteful number, since it uses less digits than its factorization.

1231278074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2785729.

The product of its (nonzero) digits is 18816, while the sum is 35.

The square root of 1231278074 is about 35089.5721547015. The cubic root of 1231278074 is about 1071.8122472523.

Adding to 1231278074 its reverse (4708721321), we get a palindrome (5939999395).

The spelling of 1231278074 in words is "one billion, two hundred thirty-one million, two hundred seventy-eight thousand, seventy-four".